| Autor: |
Rugmini, R, Chandana, B. D. S., Sekhar, K. C., Sugumaran, Sathish |
| Zdroj: |
Emergent Materials; 20240101, Issue: Preprints p1-15, 15p |
| Abstrakt: |
This work presents an innovative approach for the development of highly flexible and portable banana pith mediated silver nanoparticles (AgNPs)-Rice Starch (BARS) composite films for both naked eye detection of Fe3+and photothermal applications. The film is fabricated using sustainable methods with rice starch as the dispersing matrix. The AgNPs form face centered cubic structure with an average particle size of 86 nm. The response of BARS film for Fe3+detection exhibits a hill type curve with a visual readout and spectroscopic detection limits of (LOD) of 7.1 µM and 4.7 µM respectively. The sensing mechanism is elucidated using current-voltage (I-V) characteristics, attributing to Fe3+chelation and redox reactions. Notable selectivity is achieved via naked eye detection for Fe3+over other ions. A remarkable photothermal efficiency of 33% with maximum temperature rise of 11 °C is obtained without much deviation in the performance over 7 continuous on-off cycles. BARS film exhibits remarkable tensile strength of 2 MPa. Flexibility is confirmed by bending up to 180º and maintaining robustness over 1900 bending cycles. |
| Databáze: |
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